Counter-Propagating SPDC Photon Pair Generation with High Coincidence-to-Accidental Ratio

2026

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Authors: Tim J. Wörmann, Rodrigo Amorim, Andrius Zukauskas, Lars Grüner-Nielsen, Valdas Pasiskevicius, Karsten Rottwitt
DOI: 10.1364/cleo_fs.2026.ftu1d.5
Cited by: 1
References: 8

Abstract

We demonstrate counter-propagating spontaneous parametric down-conversion in a sub-micron periodically poled Rb-doped KTP crystal, matching the highest reported coincidence-to-accidental ratio. A first heralded g H (2) measurement confirms the high-purity single-photon generation.

Publication details

Pages
FTU1D.5–FTU1D.5
Publication date
1 January 2026